化工环保2023，Vol.43Issue(6)：805-812,8.DOI:10.3969/j.issn.1006-1878.2023.06.013
生物通风法修复石油烃污染土壤
Remediation of petroleum hydrocarbon contaminated soil by bio-ventilation process
摘要
Abstract
Bio-ventilation technology was utilized to remediate the simulated petroleum hydrocarbons(TPH)contaminated soil.The key factors affecting the TPH degradation rate were explored,and the degradation mechanism was discussed.The study results indicate that:Under the conditions of initial TPH concent 10 000 mg/kg,mass ratio ofC toN to P 100∶15∶1,soil moisture content 20％,ventilation rate 100 mL/min,and remediation time 63 d,the TPH degradation rate is 68.3％;The order of influence of various factors on TPH degradation rate is initial TPH content＞soil moisture content＞mass ratio of C to N to P＞ventilation rate;By considering carbon skeleton,TPH with open chain carbon structure is more easily degraded by microorganisms than TPH with circular carbon structure;By considering carbon chain,the shorter the carbon chain,the easier it is to be biodegraded.Microorganisms use TPH as a carbon source and degrade it through oxidation,hydrolysis,alkylation,and dealkylation under the action of a series of enzymes,and the TPH with simpler structure is easier to be degraded.关键词
污染土壤/石油烃/生物修复/生物通风Key words
contaminated soil/petroleum hydrocarbon/bioremediation/bio-ventilation分类
资源环境引用本文复制引用
殷鹂婷,韩书新,刁志龙,王勇,蒋梦涵,高焕方..生物通风法修复石油烃污染土壤[J].化工环保,2023,43(6):805-812,8.基金项目
重庆市科技创新应用示范工程项目(cstc2018jszx-cyzdX0019). （cstc2018jszx-cyzdX0019）
